My Son found a pile of bookmarks which I’d had printed as a give away/promotional material for my book, Incite Insight. He decided that sitting in a box with some printed copies of the book was not the best use for them. He asked me to build a “Doom Ship” like Bowser’s in the various Mario Bros games. The ship is nothing but bookmarks and sticky tape (still a work in progress). The ship is able to carry four “Clown Carts” (made from other resources) for him to use when battling his Mario toys.
You know what? Despite the environmental cost of the paper and tape I think this was a really good use for the bookmarks. My Son and I got to spend quality time together making it and he certainly appreciated that I’d donated my resources and the final outcome of the boat.